Keeping My Head Still - To experience a surge of second-hand embarrassment so intense, one is physically unable to shake one's head (SMH). Usually accompanied by an intense desire to avoid eye contact, and an all-encompassing silence.

Person 1: Have you listened to Iggy Azalea's newest album? It's straight fire.
Person 2: I haven't listened to anything except the My Little Pony soundtrack for the last four years.
Everyone: KMHS